Attachment--and loss.

Cause, conseguenze e strategie di mitigazione Proponiamo il primo di una serie di articoli in cui affronteremo l’attuale problema dei mutamenti climatici. Presentiamo il documento redatto, votato e pubblicato dall’Ipcc - Comitato intergovernativo sui cambiamenti climatici - che illustra la sintesi delle ricerche svolte su questo tema rilevante.

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Climate Change 2007: The Physical Science Basis.

The detection of psychiatric illness by questionnaire

Abstract A two-dimensional version of the Pennsylvania State University mesoscale model has been applied to Winter Monsoon Experiment data in order to simulate the diurnally occurring convection observed over the South China Sea. The domain includes a representation of part of Borneo as well as the sea so that the model can simulate the initiation of convection. Also included in the model are parameterizations of mesoscale ice phase and moisture processes and longwave and shortwave radiation with a diurnal cycle. This allows use of the model to test the relative importance of various heating mechanisms to the stratiform cloud deck, which typically occupies several hundred kilometers of the domain. Frank and Cohen's cumulus parameterization scheme is employed to represent vital unresolved vertical transports in the convective area. The major conclusions are: Ice phase processes are important in determining the level of maximum large-scale heating and vertical motion because there is a strong anvil componen...

Numerical study of convection observed during the Winter Monsoon Experiment using a mesoscale two-dimensional model [presentation]

Fluorescent carbon nanoparticles or carbon quantum dots (CQDs) are a new class of carbon nanomaterials that have emerged recently and have garnered much interest as potential competitors to conventional semiconductor quantum dots. In addition to their comparable optical properties, CQDs have the desired advantages of low toxicity, environmental friendliness low cost and simple synthetic routes. Moreover, surface passivation and functionalization of CQDs allow for the control of their physicochemical properties. Since their discovery, CQDs have found many applications in the fields of chemical sensing, biosensing, bioimaging, nanomedicine, photocatalysis and electrocatalysis. This article reviews the progress in the research and development of CQDs with an emphasis on their synthesis, functionalization and technical applications along with some discussion on challenges and perspectives in this exciting and promising field.

Carbon quantum dots and their applications

Merrifield resin supported ionic liquids/L-proline as effcient and recyclable catalyst systems for asymmetric aldol reaction have been developed. L -Proline with Merrifield resin supported ionic liquids can catalyze asymmetric aldol reaction smoothly and generate the corresponding products in good to excellent yields and ee values. In addition, the supported catalyst systems can be recycled simply by filtration and reused for five times without significant decrease in activity.

Merrifield Resin Supported IonicLiquids/l-Proline as Efficientand Recyclable Catalyst Systems for Asymmetric Aldol Reaction

At half-filled Landau level, composite fermions with chiral p-wave pairing will form Moore-Read state which hosts charge-e/4 fractional excitation, this excitation support non-Abelian statistics and have potential to enable topological quantum computation. Due to the SU(4) symmetry of electron and electric-field tunability, bilayer graphene become an ideal platform for exploring physics of multi-component quantum Hall state and is candidate for realizing non-Abelian statistics. In this paper, high-quality bilayer graphene/hBN heterostructure is fabricated by using dry-transfer technique, and electric transport measurement is performed to study quantum Hall state behavior in bilayer graphene under electric field and magnetic field。Under strong magnetic field, sequences of incompressible state with quantized Hall conductivity are revealed at -5/2, -1/2, 3/2 filling of Landau level.The feature of even-denominator quantum Hall state manifests more visible then weaker with increasing magnetic field and this correspond to the polarization of Landau level wave function. The experimental results imply the observed even-denominator fractional quantum Hall state belong to the topological phase described by Pfaffian wavefunction.

Even-denominator fractional quantum Hall state in bilayer graphene

A Bi-2223/Ag insert was fabricated to assemble a high field superconducting magnet. The insert consists of 17 double pancakes, with turn to turn and layer to layer insulations. To get the current distribution in each turn of the pancake coil, a numerical method of magnetization in a thin film derived from E.Zeldov was employed. To improve the calculation accuracy, we add the I C data tested from the experiments into the code directly. In the calculation, we take several different cases into account, such as High Field-Low Current (HFLC) case, Low Field-High Current (LFHC) case, which will have an effect on the current distributions. The overall process is divided into three sections: Firstly, we calculate the nonuniform but symmetrical transport current distributions through the transport current model. Secondly, the non-uniform and asymmetrical transport current distributions is recalculated through the magnetic field and transport current model. Thirdly, the screening current distributions are calculated after the coil is discharged.

Analysis of Current Distribution in Bi-2223/Ag Insert Pancake Coil

Summary Commitment to organizational change can explain a range of employees' attitudes and behaviors during organizational change, and its measurement is central to explaining such organizational linkages. The purpose of this study is to re-examine the dimensionality of Herscovitch and Meyer's Commitment to Change Scale across two different industrial samples in a non-Western cultural context (China). The two samples were 198 civil servants (60.0% men; M age = 29.3 yr., M organizational tenure = 62.7 mo.) and 442 high-tech company employees (58.2% men; M age = 30.5 yr., M organizational tenure = 66.5 mo.) who had respectively undergone major changes in compensation and performance appraisal systems in their organizations at the time of the research. Results of exploratory and confirmatory factor analyses showed that a four-factor model with 14 items fit the data best in both samples. The generality of the scale's structure as well as its implications for change-management practices are discussed.

Cross-industry dimensionality of the commitment to change scale in China.

Abstracts are not published in this journal

Lei Wang

Papers

Merrifield Resin Supported IonicLiquids/l-Proline as Efficientand Recyclable Catalyst Systems for Asymmetric Aldol Reaction

Even-denominator fractional quantum Hall state in bilayer graphene

Analysis of Current Distribution in Bi-2223/Ag Insert Pancake Coil

Cross-industry dimensionality of the commitment to change scale in China.

Femtosecond studies of the third-order optical non-linearity of nanometre-sized cadmium oxide organosols by the z-scan technique